Answers

Subtract 40/49 from 42/30

1^st number: 1 12/30, 2^nd number: 40/49

42/30 - 40/49 is 143/245.

Steps for subtracting fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 49 is 1470
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1470
2. For the 1st fraction, since 30 × 49 = 1470,
   42/30 = 42 × 49/30 × 49 = 2058/1470
3. Likewise, for the 2nd fraction, since 49 × 30 = 1470,
   40/49 = 40 × 30/49 × 30 = 1200/1470
4. Subtract the two like fractions:
   2058/1470 - 1200/1470 = 2058 - 1200/1470 = 858/1470
5. After reducing the fraction, the answer is 143/245

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